The surprise deal, which would join the venerable PGA Tour and a rival Saudi-funded golf start-up, LIV, was announced in June.
The Saudi sovereign wealth fund, called the Public Investment Fund, or PIF, is controlled by the Saudi government.
The Saudi Embassy did not immediately respond to a request for comment on the subpoena, which names the Public Investment Fund's New York-based U.S. subsidiary, USSA International.
This summer's announcement of the PGA-Saudi golf deal ended a legal battle between the two rivals.
Blumenthal said available public records indicate the Saudi sovereign wealth fund has expanded its investments in the United States from $2 billion in 2018 to $35 billion now.
Persons:
Sen, Richard Blumenthal's, al, LIV, ” Blumenthal, Blumenthal, “, ”, Crown Prince Mohammed bin Salman
Organizations:
WASHINGTON, Saudi, PGA, Connecticut, Senate, PGA Tour, Public Investment Fund, Public Investment, United, Saudi Embassy, USSA, Crown
Locations:
United States, Saudi, York, San Francisco, Saudi Arabia